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  1. harryS

    On/Off Switch

    This is how I did an anti-spark XT60. Pretty much any resistor should work, but keep it over 5000 ohms. When the switch is turned on, it allows full current to go thru. It can be realized like this. I quit using it though. I'm not having a problem with the XT60's turning black.
  2. harryS

    Broken motor gear for acbest 27.5 48vlt 1200watt e bike

    That's a tough part to look for. Popular motors like AKM and Bafang have parts, but the no name guys are like orphans, I see you marked and counted them, and it looks like 39T, Count the other ones to be sure, Post on a technical nuts and bolts forum like endless sphere too,
  3. harryS

    Anyone prefer a fixed single-speed ebike?

    Nope. Ever since we were 8 years old, we aspired to the 3 speed English Racer over our coaster brake bikes. and later on to the 10 speeds. Our younger siblings had their Schwinn Sting Rays, but the cool kids had the models with shift lever. Shifting gears made biking easier and more fun, With...
  4. harryS

    Ebike scam video

    I don't feel so bad now about deleting the phone message from Publishers Clearing House. Only us old folks would recognize the name and be scammed.
  5. harryS

    Consumer Reports: Ebike Fires

    I managed to see the 1st paragraph before the paywall went up. It read something like ..."The fire started when water entered the facility, Water is known to ignite lithium", If they are that stupid about batteries, no wonder the place catches fires.
  6. harryS

    Welcome to the 21st century!!!

    We all get another year of free Win 10 support but you have to know your microsoft login to sign up. I did that with mine, but my wife's PC was registered to a long dead email. I could have reloaded her unit with a new user, but switched her to a inexpensive Dell refurb. As for ebikes, I don't...
  7. harryS

    250 watt motor and 18max current controller?

    One more comment on Winter riding with Front wheel drive. You'll find that front wheel spinning like crazy whenever the pavement is slippery. You might think it's OK til you go uphill, and the weight shift will cause it to lose traction too.
  8. harryS

    250 watt motor and 18max current controller?

    My first DIY ebike was going to be a rear drive on an alloy frame. I posted this picture and was advised to use torque arms because the alloy frame has too many fillets and cutouts. Instead, I moved the motor over to a steel frame bike. What was ironic was that the old 1990's mountain bikes...
  9. harryS

    250 watt motor and 18max current controller?

    Self learning usually works. If you have a voltmeter, measure the throttle voltage to make sure it's increasing smoothly from about .70 v to a max around 4.3 V when you rotate it. Maybe it's jumping from 0 to 4V.
  10. harryS

    How many miles a year do you ride?

    We had a 12" snowfall and an early start to winter lockdown on the last day of November. We had a brief thaw and got out once last month, In the prior year, we had a dozen December rides. Bummer. It's -10C right now. Happy New Years to you bikers that can bike.
  11. harryS

    250 watt motor and 18max current controller?

    I run a 25A KT sinewave controller with a 48V battery into this little Q100H 250W motor. It's rider restraint that keeps it from melting. I use it with an LCD3 display. It might show 1200 W briefly on a hill, but it would be foolish run it at high levels sustained . That's 25A peak anyway. KT...
  12. harryS

    Happy Christmas everyone.

    Mele Kalikamaka
  13. harryS

    Winter e-biking advices

    Quite the video.
  14. harryS

    Cable actuated hydraulic caliper upgrade

    Yes, you need the frame fittings. These replace mechanical disk brakes and work well til they don't. I have installed two HB100's and one of them failed (leak) after a few months, but the replacement has been good for a few years. Probably 5% of them might leak. I have spares. I think you get...
  15. harryS

    How many miles a year do you ride?

    I've been doing 3000-3100 miles annually. My wife comes along for two thirds of that. Sometimes we can ride thru December, but the first snow that sticks ends the season. We're too old to risk a fall,
  16. harryS

    How much is nearby dealer worth?

    Maybe a used Velo or Ride-1up for half price will come around, Maybe you'll come to like your beater amazon bike,
  17. harryS

    Help with my first build!

    OK, you already have a 20" fat tire ebike, and think it's too slow? Probably goes 24 mph? By the way, you're lucky if it goes that fast. And you still want to go faster? Well, I've always heard that the 1500W direct drive motors like the Voilamarts can get past 30 mph pretty easily on 48V. Your...
  18. harryS

    Robots are coming fast

    They showed a clip of the robot jogging by a building shaped like a rocket ship. Turns out it's real.
  19. harryS

    Replacement controller

    Scariest hill I ever saw in Florida was crossing the Sanibel Island causeway bridge, Felt like my seat was above the guard rail and the water was ten stories down. Wind didn't help. Now this was before your hurricane wiped out the bike lanes, I wouldn't do it now.
  20. harryS

    The Unique New E-Bike With Rivian DNA

    It's been tried before. Look up Mando Footloose. Also the Zehus. Both failed. Accordingly, I don't see it as very novel Just another implementation of a bad concept. You don't use your feet to charge a battery. USe them to move the bike. If a motor is helping, that's good. .
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